Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7306216 | Power transmitting apparatus, power switching apparatus, and driving apparatus of multi-function machine using the same A driving apparatus of a multi-function machine includes a scanner unit scanning data recorded on a sheet of document and a document transport part to transport the sheet of document. A printer unit prints data on a sheet of paper for an output and includes a carrie... | 12/11/2007 |
| 5263784 | Sheet feeder for printer In a printer, a sheet feeder includes a motor which is used for a plurality of mechanisms in common so as to make the printer lighter in weight and more compact in size. The sheet feeder can vary the feeding amount of the sheet in response to the printing... | 11/23/1993 |
| 4881837 | Automatic sheet feeder The sheet feeder can be mounted on a typewriter or on a printer in a system for processing data. The sheets which are accommodated in a feed magazine are passed to the platen roller by friction stripper rollers. After the printing operation, the sheets ar... | 11/21/1989 |
| 4573814 | Dot matrix printer The dot printer, which is of small dimensions, is used with desk top computers or as a peripheral unit with small processors. The printer writes in the serial-parallel mode by means of a thermal head (26) on a paper tape (16) wound on a writing platen (10... | 03/04/1986 |
| 4565461 | Pitch-changeable, cam-actuated paper feed for serial printer The printer includes a print head moveable in a lateral direction perpendicular to the feeding direction of a sheet of recording paper. The print head is supported on a carriage which is reciprocably driven. Different paper feed pitches are selectable dep... | 01/21/1986 |
| 4379646 | Paper feed roll rotated by print head carrier movement A thermal printer paper feeding mechanism having a reciprocable print head carrier. A paper feeding roller has a ratchet cross section with the ratchet teeth twisted along the length of the paper feed roller. The paper feed roller rotates for advancing pa... | 04/12/1983 |
| 4167345 | Printing apparatus with selectively movable printing heads Apparatus for printing characters on at least one data carrier comprising a printing head movable along the data carrier, a line advance device for feeding the data carrier substantially perpendicular to the moving direction of the printing head, an ink r... | 09/11/1979 |
| 3986594 | Serial impact calculator printer A serial impact printer of the type utilizing a dot matrix print head is specifically adaptable for use as a calculator or adding machine and is characterized by utilizing a common drive source to advance the print head across the paper, advance the paper... | 10/19/1976 |
